{"id":39556,"date":"2024-11-26T09:34:21","date_gmt":"2024-11-26T01:34:21","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39556\/"},"modified":"2024-11-26T09:34:21","modified_gmt":"2024-11-26T01:34:21","slug":"%e5%9c%a8java%e4%b8%ad%e6%80%8e%e4%b9%88%e5%90%91%e5%af%b9%e8%b1%a1%e6%95%b0%e7%bb%84%e8%b5%8b%e5%80%bc","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39556\/","title":{"rendered":"\u5728java\u4e2d\u600e\u4e48\u5411\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c"},"content":{"rendered":"<blockquote><p>\n  \u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c\u6b65\u9aa4\uff1a\u521b\u5efa\u5bf9\u8c61\u6570\u7ec4\u3002\u4f7f\u7528\u7d22\u5f15\u548c\u8d4b\u503c\u8fd0\u7b97\u7b26\u5c06\u5bf9\u8c61\u8d4b\u503c\u5230\u7279\u5b9a\u4f4d\u7f6e\u3002\u5bf9\u8c61\u6570\u7ec4\u53ef\u4ee5\u5b58\u50a8\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\u3002\u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u56fa\u5b9a\u3002\u8bbf\u95ee\u6570\u7ec4\u8d8a\u754c\u4f1a\u629b\u51fa\u5f02\u5e38\u3002\u4f7f\u7528 array.getlength() \u65b9\u6cd5\u67e5\u770b\u6570\u7ec4\u957f\u5ea6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111613070040923.jpg\" class=\"aligncenter\" title=\"\u5728java\u4e2d\u600e\u4e48\u5411\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c\u63d2\u56fe\" alt=\"\u5728java\u4e2d\u600e\u4e48\u5411\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5728 Java \u4e2d\u5411\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u5411\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c\u662f\u4e00\u4e2a\u7b80\u5355\u800c\u76f4\u63a5\u7684\u8fc7\u7a0b\u3002<\/p>\n<p><strong>\u521b\u5efa\u5bf9\u8c61\u6570\u7ec4<\/strong><\/p>\n<p>\u9996\u5148\uff0c\u4f60\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\u6765\u5b58\u50a8\u5bf9\u8c61\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>Object[] array = new Object[size];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u4e2d\uff0csize \u662f\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002<\/p>\n<p><strong>\u8d4b\u503c\u5bf9\u8c61<\/strong><\/p>\n<p>\u8981\u5411\u6570\u7ec4\u4e2d\u7684\u7279\u5b9a\u4f4d\u7f6e\u8d4b\u503c\u5bf9\u8c61\uff0c\u8bf7\u4f7f\u7528\u7d22\u5f15\u5e76\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26 (=\uff09\uff1a<\/p>\n<pre>array[index] = object;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u4e2d\uff0cindex \u662f\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4f4d\u7f6e\uff08\u4ece 0 \u5f00\u59cb\uff09\uff0cobject \u662f\u8981\u8d4b\u503c\u7684\u5bf9\u8c61\u3002<\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u5411\u5bf9\u8c61\u6570\u7ec4\u4e2d\u8d4b\u503c\uff1a<\/p>\n<pre>\/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 3 \u4e2a\u5143\u7d20\u7684\u5bf9\u8c61\u6570\u7ec4\nObject[] array = new Object[3];\n\n\/\/ \u8d4b\u503c\u5bf9\u8c61\narray[0] = \"\u5b57\u7b26\u4e32\";\narray[1] = 10; \/\/ \u6574\u6570\narray[2] = new Date(); \/\/ \u65e5\u671f\u5bf9\u8c61\n\n\/\/ \u6253\u5370\u6570\u7ec4\u5185\u5bb9\nfor (Object obj : array) {\n    System.out.println(obj);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>\u5b57\u7b26\u4e32\n10\n[object Date]<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f<\/strong><\/p>\n<ul>\n<li>\u5bf9\u8c61\u6570\u7ec4\u53ef\u4ee5\u5b58\u50a8\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u5305\u62ec\u7a7a\u5f15\u7528 (null)\u3002<\/li>\n<li>\u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u56fa\u5b9a\uff0c\u65e0\u6cd5\u52a8\u6001\u8c03\u6574\u3002<\/li>\n<li>\u8bbf\u95ee\u6570\u7ec4\u8d8a\u754c\u4f1a\u629b\u51fa ArrayIndexOutOfBoundsException \u5f02\u5e38\u3002<\/li>\n<li>\u53ef\u4ee5\u4f7f\u7528 Array.getLength() \u65b9\u6cd5\u68c0\u67e5\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5728java\u4e2d\u600e\u4e48\u5411\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c\u6b65\u9aa4\uff1a\u521b\u5efa\u5bf9\u8c61\u6570\u7ec4\u3002\u4f7f\u7528\u7d22\u5f15\u548c\u8d4b\u503c\u8fd0\u7b97\u7b26\u5c06\u5bf9\u8c61\u8d4b\u503c\u5230\u7279\u5b9a\u4f4d\u7f6e\u3002\u5bf9\u8c61\u6570\u7ec4\u53ef\u4ee5\u5b58\u50a8\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\u3002\u6570\u7ec4\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u56fa\u5b9a\u3002\u8bbf\u95ee\u6570\u7ec4\u8d8a\u754c\u4f1a\u629b\u51fa\u5f02\u5e38\u3002\u4f7f\u7528 array.getlength() \u65b9\u6cd5\u67e5\u770b\u6570\u7ec4\u957f\u5ea6\u3002 \u5728 Java \u4e2d\u5411\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c \u5728 Java \u4e2d\uff0c\u5411\u5bf9\u8c61\u6570\u7ec4\u8d4b\u503c\u662f\u4e00\u4e2a\u7b80\u5355\u800c\u76f4\u63a5\u7684\u8fc7\u7a0b\u3002 \u521b\u5efa\u5bf9\u8c61\u6570\u7ec4 \u9996\u5148\uff0c\u4f60\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\u6765\u5b58\u50a8\u5bf9\u8c61\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Object[] array = new Object[size]; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0csize \u662f\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf\u3002 \u8d4b\u503c\u5bf9\u8c61 \u8981\u5411\u6570\u7ec4\u4e2d\u7684\u7279\u5b9a\u4f4d\u7f6e\u8d4b\u503c\u5bf9\u8c61\uff0c\u8bf7\u4f7f\u7528\u7d22\u5f15\u5e76\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26 (=\uff09\uff1a array[index] = object; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff0cindex \u662f\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4f4d\u7f6e\uff08\u4ece 0 \u5f00\u59cb\uff09\uff0cobject \u662f\u8981\u8d4b\u503c\u7684\u5bf9\u8c61\u3002 \u793a\u4f8b \u4e0b\u9762\u662f\u4e00\u4e2a\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u5411\u5bf9\u8c61\u6570\u7ec4\u4e2d\u8d4b\u503c\uff1a \/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 3 \u4e2a\u5143\u7d20\u7684\u5bf9\u8c61\u6570\u7ec4 Object[] array = new Object[3]; \/\/ \u8d4b\u503c\u5bf9\u8c61 array[0] = &#8220;\u5b57\u7b26\u4e32&#8221;; array[1] = 10; \/\/ \u6574\u6570 array[2] = [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-39556","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39556","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=39556"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39556\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}